They have since added the option. Settings, transactions, manual fee tier election.

Though you cannot specify your own custom fee because this is bad for privacy.

Very nice. Now I can remove that failed tx from 6 months ago!

Feather just keeps getting better and better. Did not realize they tagged another monero release already… nothing like a network stress test to get the bug fixes going :)

Bounty: Add dynamic and manual TX fee selection to Feather Wallet

https://bounties.monero.social/posts/108/1-000m-add-dynamic-and-manual-tx-fee-selection-to-feather-wallet